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參數資料
| 型號： | TPS3808 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Low Quiescent Current, Programmable-Delay Supervisory Circuit |
| 中文描述： | 低靜態電流，可編程延遲監控電路 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 417K |
| 代理商： | TPS3808 |
www.ti.com
FEATURES
Power-On Reset Generator with Adjustable
Delay Time: 1.25ms to 10s
Very Low Quiescent Current: 2.4
μ
A typ
High Threshold Accuracy: 0.5% typ
Fixed Threshold Voltages for Standard
Voltage Rails from 0.9V to 5V and Adjustable
Voltage Down to 0.4V Are Available
Manual Reset (MR) Input
Open-Drain RESET Output
Temperature Range: –40
°
C to +125
°
C
Small SOT23 and 2mm
×
2mm QFN Packages
DESCRIPTION
The
TPS3808xxx
supervisory circuits monitor system voltages from
0.4V to 5.0V, asserting an open drain RESET signal
when the SENSE voltage drops below a preset
threshold or when the manual reset (MR) pin drops to
a logic low. The RESET output remains low for the
user adjustable delay time after the SENSE voltage
and manual reset (MR) return above their thresholds.
APPLICATIONS
DSP or Microcontroller Applications
Notebook/Desktop Computers
PDAs/Hand-Held Products
Portable/Battery-Powered Products
FPGA/ASIC Applications
Typical Application Circuit
1.2V
3.3V
TPS3808G12
TPS3808G33
DSP
SENSE
V
DD
V
DD
SENSE
V
I/O
V
CORE
GPIO
GND
GND
GND
RESET
MR
C
T
C
T
RESET
DBV PACKAGE
SOT23
(TOP VIEW)
V
DD
SENSE
C
T
RESET
GND
MR
1
2
3
6
5
4
RESET
GND
MR
6
5
4
V
DD
SENSE
C
T
1
2
3
DRV PACKAGE
2mm x 2mm QFN
(TOP VIEW)
Power
PAD
TPS3808
SBVS050E–MAY 2004–REVISED OCTOBER 2005
Low Quiescent Current, Programmable-Delay
Supervisory Circuit
family
of
microprocessor
The TPS3808 uses a precision reference to achieve
0.5% threshold accuracy for V
IT
≤
3.3V. The reset
delay time can be set to 20ms by disconnecting the
C
T
pin, 300ms by connecting the C
T
pin to V
DD
using
a resistor, or can be user-adjusted between 1.25ms
and 10s by connecting the C
pin to an external
capacitor. The TPS3808 has a very low typical
quiescent current of 2.4
μ
A so it is well-suited to
battery-powered applications. It is available in a small
SOT23
and
an
ultra-small
PowerPAD package and is fully specified over a
temperature range of –40
°
C to +125
°
C (T
J
).
2mm
×
2mm
QFN
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 2004–2005, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS3808G01DBVEVM | 功能描述:電源管理IC開發工具 TPS3808G01 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS3808G01DBVR | 功能描述:監控電路 Programmable-Delay Supervisory RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3808G01DBVR | 制造商:Texas Instruments 功能描述:IC SUPERVISOR CIRCUIT ((NW)) 制造商:Texas Instruments 功能描述:IC, SUPERVISORY CKT 2.7 uA, 6.5V, SOT23-6 |
| TPS3808G01DBVRG4 | 功能描述:監控電路 Programmable-Delay Supervisory RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3808G01DBVT | 功能描述:監控電路 Programmable-Delay Supervisory RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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